Dust-collector.



W. J. P.'CLOAKEY. DUST COLLECTOR. APPLICATION FILED JAN. s. 1918.

Patented Aug. 13, 1918.

2 SHEETS-SHEET P. CLOAKEY.

DUST COLLECTOR. APPLICATION FILED JAN. 5. I918.

Patented Aug. 13, 191&

2 SHEETS-SHEET 2.

INVENTHH,

"WILLIAM J. P. CLOAKEY, 01E IBRANTFURD, ONTdlRIQ, GILDA.

DUST-COLLECTOR.

Specification of'ltetters Patent. '1 atgnted Aug, 11L, .jlmllfi.

application filed January a, 19ft. serial No. matte.

To all whom it may concern Be it known that I, WILLIAM Pd. P.

'ULOAKEY, a subject of the King of Great Britain, residing in the cityof Brantford, county of Brant, Province of Ontario, Canada, haveinvented certain new and use- {ful Improvements in Dust-Collectors, ofwhich the following is a specification,

This invention relates to means for separating the dust from dust ladenair particularly adapted for use with street sweeping apparatus, and myobject is to devise simple apparatus for that purpose which will possessgreat capacity for its size and which automatically cleanses itselfwhile in use.

I attain my objects by means of the constructions hereinafter describedand illustrated in the accompanying drawings in which- Figure '1 is ahorizontal section, partly broken away, of my improved dust colleetor;and V Fig. 2 a vertical section of the same.

In the drawings like numerals of reference indicate corresponding partsin the difierent figures. In the drawings I illustrate a double form ofthe apparatus, but it will be understood, however, that for smallcapacity one half only of the apparatus can be used.

Within an outer casing 1, which, at its lower part, forms a water tank,I locate a cylinder 2 into which the dust laden air is driven by meansof the fan 3, the exhaust pipe 4 of which is led into the end of thecylinder 2. Concentric with the cylinder is arranged a drum 5, theperiphery of which is formed of a suitable screening material.

This drum is preferably rotatable, being adapted to turn on the flanges6, which are supported from the exhaust pipes 4 or other suitablestationary parts. The ends of the drum are preferably imperforate andfit close to the ends of the wings 7 secured to the exterior of thecylinder 2. These wings are preferably two in number and are arrangeddiametrically opposite one another. lEach wing has its outer surfaceconcentric with the drum 5, and subtends an arc of periphery of abouteighty degrees; These wings are preferably hollow for the sakeoflightness and for a further purpose which wlll hereafter appear.

The drum hassecured to its inner surface a series of longitudinal radialpartitions 8,

which extend from end to end of the drum. The distance between any twoof them is less than the length of the arc of the outer surface ofeither of the wings.

In the side of the cylinder 2 is formed a port 9, through which airpasses from the interior of the cylinder after following the coursewhich will be hereafter described. This port is located between thewings 7 and preferably at theunder side of the cylinder, Dust laden airissuing from this port thus first strikes the surface of the water inthe bottom of the casing 1. Owing to the engagement of the partitions 8'and the wings 7, this air cannot at once he deflected upwardly to passstraight out through the top of the drum, but is gradually allowed topass upward as the pockets formed by the drum, the partitions and thewings are alternately opened to the space below the wings and the spaceabove the wings.

The partitions, being preferably of screen material, of course, permit acertain amount of air to pass upwardly at any time, but with theconstruction described the dust laden air is so distributed as to makepractically every part of the screen surface take its share of the work.The water level in the bottom of the casing is'maintained at such aheight that as the drum is rotated not only areall parts, of itsperiphery thoroughly washcd,.but each partition is in turn completelysulnncrgcd'and thoroughly washed. All the screen surfaces are thusautomatically clcanscd. whereby they are maintained in effective vorkingcondition.

To increase the effectiveness of the apparatus. it is desirable that acertain quantity of water he hcatcn up with the dust laden air beforescreening takes place I therefore arrange within the cylinder '2 one ormore rotary heaters 15. These boaters are connected with a shaft10'passing through the cylinder and supported in suitable bearings. Theouter end of the shaft is provided with a driving pulley 11. Any type ofrotary beater might be employed. I show, however, for this purpose disks12 between which are secured the radial blades 13, which blades,however, extend only part way from the circumference of the heater tothe shaft. A large eye is formed inthe outer disk or each beater. Withthe eye of the outer beater the exhaust pipe 4 of the fan com- 17" tionof the beater.

sible without .interfering with the free rota The beater discharges intothe interior of the cylinder 2, and if only one beater is employed itwill be allowed to pass directly to the port 9. If, however, a secondbeater'be employed, the cylinder will be divided by a partition 14,which partition "is arranged to form a running fit in the eye of thesecond beater 15.

After passing through the second beater, the air passes into'theinterior of the cylinder 2' and thence out through the port 9. As beforestated, water is introduced to be beaten up with the air in the heaters.To the outer beater this water'is preferably conveyed by means of thesleeve 16 suitably fitted about the shaft 10 and connected by means of apipe 17 with a suitable source of water supply. Holes 18 are formed inthe sleeve 16 communicating with the interior of the first beater. Waterthe interior of the second beater by making the inner part of the shaft10 hollow and providing it with holes communicating respectively withthe interior of the second beater and the interior of the sleeve 16.

A i ery thorough mingling of the water and dustladen air is thusobtained, the spray of water in the interior of each beater beingpractically atomized by the action of the heaters and brought into veryintimate contact with the dust carried by the air. The work of thescreen surfaces is thus materially lightened and the capacity of theapparatus for its size made much greater than would be the case withoutthe use of the heaters. The drum, for the purposes of, rotation, has asleeve 19 secured to one end provided with a sprocket wheel 20.

For great capacity, the arrangement described may be duplicated at eachend of the apparatus. It will be understood, of course, that variouschanges may be made in the details of construction without departingfrom the spirit of my invention.

The dusty air is forced by the pump 3 into the exhaust pipe 4:,whichleads through the end of the cylinder 2 and communicates with the eye ofthe rotary beater 15. In the beater the air is intimately mixed with aspray of water, which is introduced through the sleeve 16. The mixtureof air,- dust and water then passes to the eye of the second beater 15,if a second beater be employed, and is there beaten up with a furtherquantity of water. After passing the second beater, the air passes fromthe port 9 in the cylinder 2 and strikes the surface of the water in thebottom of the casing 1. Owing to the engagement of the partitions 8 andthe wlngs 7 this air cannot at once be deflected upwardly to passstraight out through the top of the drum, but isgradually allowed topass upward, as the pockets formed by the drum, the partitions and thewings are almay be conveyed to ternately opened to the space below thewings and the space above the wings. The air finally escapes throughthescreened surfaces leaving the dust behind, which dust is washed offas the drum is rotated in the manner hereinbefore described.

What I claim as my invention is 1. In a dust collector, the combinationof a rotatable screen drum having radial longitudinal partitionsarranged therein extending from the periphery vpart Way toward thecenter; a stationary dusty air conveying cylinder about which the screendrum rotates; and a plurality of wings connected to and extendinglengthwise of the cylinder having arc-shaped outer surfaces, the arcsbeing of greater length than the distance between any two of thepartitions aforesaid, a port being formed in the side of the cylinderbetween the wings.

2. In a dust collector, the combination of a rotatable screen drumhaving radial longi- ,-tudinal screen partitions arranged thereintending from the periphery part way toward the center; a stationarydusty air conveying cylinder about whlch the screen drum rotaktes; aplurality of wings connected to and having arc-shaped outer surfaces,the arcs being of greater len h than the distance between any two of t epartitions aforesaid, a port being formed in the side of the cylinderbetween the wings; and a tank of water into which said drum dips.

4. In a dust collector, the combination of a rotatable screen drumhaving radial longitudinal screen partitions arranged therein extendingfrom the periphery part way toward the center; a stationary dusty airconveying cylinder about which the screen drum rotates; a plurality ofwings connected to and extending lengthwise of the cylinder havingarc-shaped outer surfaces, the arcs being of greaterlength than thedistance between any two of the partitions aforesaid, a port beingformed in the side of the cylinder between the wings; and a tank ofwater, into which said drum dips.

5. In a dust collector, the combination of a rotatable screen drumhaving radial longitudinal partitions arranged therein extending fromthe periphery part way toward 'extendmg lengthwise of the cylindernarraaa the center; a stationary dusty air'conveying cylinder aboutwhich the screen drum rotates; a plurality of wings connected to andextending lengthwise of the cylinder having arc-shaped outer surfaces,the arcs being oi greater length than the distance between any two ofthe partitions aforesaid, a port being formed in the side of thecylinder between the wings; a rotary heater located within said cylinderinto which the dust laden air is led and from which it escapes into thecylinder; and means for leading water into the heater adjacent its axis.

6, ln a dust collector, the combination of a screen drum; a dusty airconveying cylin der extending axially of the drum and having an air portformed in its side; a rotary heater located within the cylinder co-axialtherewith and out of alinernent with the port into which beater the dustladen air is led and from which it escapes into the cylinder; and meansfor leading water into the heater adjacent its axis. a

7.. ln a dust collector, the comhination of a screen drurn; a dusty-airconveying cylinder extending axially of the drum and having an air portformed in its side; a shaft extending axially of the cylinder; a rotarybeater carried on said shaft within the cylinder; a pipe leading air tosaid heater, the air passing ironathe heater into said cylinder; and asleeve about said shaft adapted to convey water into the interior of theheater.

8.. ln a dust collector, the combination of a rotatable horizontalscreen drum; a dusty air conveying cylinder extending axially Or thedrum and having an air port formed in its side; a rotary beater locatedWithin the cylinder co-axial therewith and out of alinement with theport into which heater the dust laden air is led and from which it escapes into the cylinder; means for leading water into the "heateradjacent'its axis; and :Ttank of water into which said screen druin ips.

Signed at 'll'oronto, Canada.

Wlllllhllddld d. P. ULUEY;

